This pamphlet consists of an introduction and two parts— the first being extracts from a paper by Clark P. Collins, the second a summary of the report of the British Royal Commission on Sewage Disposal. Collins describes the various methods, dismissing the chemical precipitation method as unavailable because of the large amount of sludge and the great cost of chemicals and labor. Sewage farming is not applicable to conditions in this country so that the method of filtration is by far the best. The separate system of conveying sewage to the place of treatment is regarded as preferable. In case sewage has to be purified the separate system is more economical. The British Commission, on the other hand, does not regard the method of chemical precipitation as obsolete. The pamphlet is well adapted to give a good view of the sewage question in general.